Table having vertically adjustable top



Feb. 12, 1952 Filed Jan. 10, 1949 o. CARLSSON 2,585,535

TABLE HAVING VERTICALLY ADJUSTABLE TOP 2 SHEETS-SHEET l l l l I i #WLT, 4

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Feb. 12, 1952 o. cARLssoN 2,585,535

TABLE HAVING VERTICALLY ADJUSTABLE TOP Filed Jan. 10, 1949 2 SHEETSSHEET 2 l /5 I I I I i I III 1''- I'U "1" 5 if v z 1;. 5

Patented Feb. 12, 1952 UNITED PATENT oFFIc-E Application January 10, 1949, Serial No. 70,079

r InS weden January 17, 19 48 This invention relates to tables and has for its object to provide a simple table structure the top of which may be raised from a normal position to a higher positionand automaticallylocked in its raised position.

Another object of the invention is to provide such a table havin a top comprising two leafsections which may be raised individually from opposite sides of the table and automatically locked in elevated position in level with each other to form a continuous table-top.

The invention resides in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated on the accompanying drawings and pointed out in the claims hereunto appended.

On said drawings:

Fig. 1 is a partial side elevation showing a table constructed in accordance with this invention with the table-top in elevated position and with one of the leaf -sections thereof extended preparatory to its being folded clown.

Fig. 2 is a partial end view, partly in section, of the table.

Fig. 3 is a top plan view of the table framework, the leaf-sections of the table-top being indicated in dash-and-dot lines.

Fig. 4 is a side elevation of the table similar to that shown in Fig. 1 but illustrating both of the table-top leaf sections in depressed and retracted position.

Referring to the drawings, numeral 5 indicates the four supporting legs of a generally rectangular table attached to frame 3 in any suitable manner. Secured between the longitudinal parts of border 3 and preferably at the bottom face thereof as shown is a bridge member l3 supporting a leaf-spring l0 extending in the longitudinal direction of the table. Mounted at each end of spring II) is a pivoting member comprising a transverse board ll secured to frame 3 by means of pivots l2. Mounted at the opposite sides of the table and substantially in the transverse vertical plane thereof are two guide devices each comprising a link l4 pivoted at one end to a respective one of a pair of rails 8 interconnected by a transverse bridge member 4, and having at its opposite end a pin I! slidable in a slot 18 in frame 3, and secondly a link [9 pivoted to frame 3 at 20 and to link M at 2| intermediate the ends thereof. Rails 8 are mounted between expanding rails l and 9 secured to the leafsections 1 and 2, and permit an extension thereof for the purpose of adding loose leaves when desired.

{2' Claims. (01. 311-67) jv In operation the table top leaf-sections I and 2 may be .elevated'individually from Opposite ends of the table, boards ll being then automatically :folded up, under the influence of spring It, to the substantially verticalposition'shown in Fig. 1. In this position boards ll backed up by blocks 6 secured at the corners of frame 3 serve to maintain table top l and 2 in elevated position. In elevating leaf-sections l and 2 the guiding devices l4, l9 ensure that the pair of rails 8 are moved vertically upwards, thus without being laterally shifted in either direction.

When the table top is to be lowered to its ini-- tial position the leaf-sections l and 2 are first extended as illustrated at the left-hand part of Fig. 1 until a spring [6 secured to the bottom surface of each of the leaf section I and 2 by means of a block l5 snaps behind the adjacent supportin board II. In retracting the leaf sections l and 2 springs l6 then fold down boards H so that the table top may be lowered to bring it into the initial position.

The illustrated embodiment of the improved table according to this invention comprises four legs but the invention could as well be applied to a table having a single central supporting pillar.

From the foregoing it will be seen that this invention provides a table of simple construction, the top of which may be readily elevated and lowered at will and in attaining these ends it is to be understood that I do not limit myself to the precise details herein shown inasmuch as minor changes may be made therein without departing from the spirit of my invention.

What I claim is:

1. An adjustable table comprising a frame, a table top formed of a pair of leaf sections loosely connected with the frame so as to be capable of being individually elevated from opposite ends of the table. a pair of boards pivoted to said frame, a leaf spring secured to said frame and engaging said boards and press them in the upward direction so that said boards automatically swing upwardly about their pivots when the respective leaf sections are raised and then engage the respective leaf section with their upper edges and support said sections in raised position, a pair of links pivotally secured at one end to the table top at opposite sides thereof and engaging the frame with their other ends and further links pivoted at their opposite ends to the frame and to intermediate points of the respective firstmentioned links, said links serving to guide and limit vertical movement of said top.

2, An adjustable table comprising a frame, a table top formed of a pair of leaf sections which are loosely connected with the frame so as to be capable of being individually elevated from opposite ends of the table and to be extended, a pair of boards pivoted to said frame, a leaf spring secured to said frame engaging said boards and pressing them upwardly so that said boards automatically swing upwardly about their pivots when the respective leaf sections are raised, and then engage said sections with their upper edges and support said sections in raised position, a pair of springs mounted on the bottom of said table top in position to snap behind said supporting boards when extended and, in retracting said leaf sections, to engage said boards for automatically folding down the latter so that the leaf sections may be lowered to initial position, a pair of guide links pivotally secured at one end res cti ely to h tabl o a pp s e sides OSCAR CARLSSON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 340,087 Bil-chard Apr. 20, 1886 368,008 Roberson Aug. 9, 1887 862,791 Bawden et al Aug. 6, 1907 996,236 Goding June 2'7, 1911 1,128,908 Manoogian Feb. 16, 1915 1,208,437 Zimmer Dec. 12, 1916 1,294,734 Wendl Feb. 18, 1919 2,017,844 Ferney Oct. 22, 1935 2,061,622 Ferney Nov. 24, 1936 E REIQ P T Number Country Date 4,948 Great Britain 1905 

